Lubricating device



Nov. l5, 1927.

1,649,348 w. A. HUNT LUBRICATING DEVICE Filedrmarcn 1. 192e 2 sheets-Sheet 1 zz H si@ J9 Z5 fm j@ ik je fm Z4 l m l 22MU H59 9 nl 25 32 I 10 70 um, l lluuf l l1 mm f7 wml f b- ,f fl Z* 1 l l1 .Al l- Uf i wm M www 3 Huhu i" 'l'! "Il lulllulnnn 2 II .z/ :ain:-4 T muy! 36 Y 37 l' a f ifv- 7 4Z 4 f2 F/G. f ll /m/@mar fam lflfz /I/' Z. MZZL Nov. 15, 1927. 1,649,348

W. A. HUNT LUBRICATING DEVICE Filed March l. 1926 2 Sheets-Sheet 2 JN VE N TOR MHZ-am Hunt positions of the cylinders.-

Patented Nov. 15, 1927.

WILLIAM A. HUNT, 0F HOLDN, WEST VIRGINIA.

LUBRICATING DEVICE.

Application filed March 1, 1926. Serial No. 91.608.

My invention relates to improvements in lubricating devices for conveyors and sprocket chains and has for its object to provide a device of this kind which will be automatic in its operation when it has been placed in operative'position, which will direct a stream of oil accurately on the parts to be lubricated, andwliich will have means actuated by the rollers of the conveyor or chain itself for timing the flow of oil, the timing means being so constructed that it can be moved out of the position in which it is engaged by the rollers when the chain has been suiiciently oiled. y

The invention is illustrated by way of example in the accompanying drawings in which Fig. vice;

F ig. 2 is a longitudinal section of one of the cylinders; i

Fig. 3 is a vertical section on the line 111-111 of Fig. 1; Y

Fig. 4 is a horizontal section on the line lV-IV of Fig. 1;

Fig. 5 is apartial view of a modification, with parts broken away; and

Fig. 6 is a plan view of a chain with which the used,.showing in dotted lines .the relative 1 shows a front elevation of the de- Referring to the drawings it will be seen that reference numeral 1 indicates a b ase plate provided with upright flanges 2 having slots 3 for the reception of bolts (not shown) for bolting the device toa support positioned over the conveyor to be lubricated. Base plate 1 is provided' with inserted cylinders 5. `The shoulders 6 of cylinders 5 rest on the upper face of the base plate, and the cylinders are threaded as at 7 for the reception of nuts 8 by which the cylinders are clamped to the base plate.

Each cylinder 5 has let into it through its shoulder 6 a pipe 9, the other ends of the pipes 9 being in communication with an oil reservoir (not shown). Each pipe 9 is provided with a shutoff valve 10. The cylinders 5 have openings 11 in their lowerends through which the oil is squirted at the proper instant by plungers 12. The pliingers 12 vare reduced at 13 to provide spaces 13 for the reception of oil from pipes 9.-

The extreme lower ends of the plungers are enlargecL as at 1d to provide means for device of Fig. 5 is adapted to beV holes d in which are forcing the oil out and for securely closing the openings 11 after each stroke of the plungers.. The upper ends of the cylinders are provided: with stuffing boxes 15.

The plungers12 are rigidly connected to each other by a cross-head 16 provided with holesr 17' for the reception of the upper ends of the plungers which are threaded yand clamped to the cross-head by nuts 18 and lock-nuts 19. Y

A third hole 20 inthe cross-head is adapted to receive the upper end 25 of the timer arm 22, which is threaded at 21 for the reception of nuts 23 and lock-nuts 24 to hold the timer arm against vertical movement with respect to the cross-head. The timer yarm is however left free to rotate in the hole 20 for a purpose to be described. The lower section 26 of the timer arm is hinged to the upper section at 27 and when in operative position extends down through a slot 29 in the base plate 1. The extreme lower end of the timer arm is curved forwardly and forked. A roller 28 is revolubly mounted in the forked lowerv end of the timer arm,

and is adapted to engage the rollers v30 of the The operation of the device is as follows:

The parts being in the position shown in Fig. 3 the roller. 30, moving in the direction indicated by the arrow will strike roller 28,

and since the lower section 26 of the timer arm is held against backward movement on its pivot 27 by the rear end of slot 29, the timer arm will move upwardly, drawing with it pistons 12, which will permit oil vto flow into the cylinders from pipe 9. When roller 28 reaches the highest point of roller 30 the lower section 26 of the timer arm will kick forwardly on its hinge 27 and permit spring 32 to snap the pistons down, thereby forcing two streams of oil out through openings 11 of the cylinders. r1`he streams of oil remain in compact masses until they strike the axle of the roller, when they splash and lubricate the joints 41, 42 of the conveyor as well as the axle 40. f

rlie device can be timed to project the streams of oil at just the proper time so that they will land squarely on the axle 40 by means of the adjusting block The block 35 has two arms 3G forming vbetween them a slot 36 which is situated directly over the slot 29 of the'base plate l. The timerl arm is guided in its reciprocation by the rear end 37 of slot 36. Block 35 is provided with a slot 38 in each arm 3G, through which slots pass cap-screws 39 tapped into the base plate l, whereby the block 35 may be adjusted forwardly and rearwardly to vary the distance between 4the timer arm and 'the cylinders along the line ot travel ot the conveyor. A third slot 38 is provided in b'locl: '35 for the bolt 33, and this bolt maybe provided with a nut tor clamping down the rear end of b'loclr 35.

Vertical adjustment oi the whole device on its support ispermitted by slots 3, so that f the vertical position of the roller 28 with respect to the Arollers 30 canbe regulated This adjustment permits regulation to some extent of the amount of oil forced out at eac-h stroke, vas `well as the securing ot' a 'proper action ot the timer arm.

When the conveyor has been su'llieiently oiled 'the lower end ot the 'timer arm is pulled forwardly out oi' the slot 29 and turned to one side so that it rests upon the upper tace ot the base plate l, the previously =mentioned `loose `mounting of the timer arm -in the 'hole 20 permitting this rotation of the timer arm.

in' Fig. .5 is shown a partial View of a modified forni of the device yadapted to oil sprocket `chains which are narrower than 'the rollers of conveyors. his form ot' 'the invention is the same as the other in all re'- `spects except that the openings ll are located at one vside 'of the Vlower ends of the cylinders, so that wl'en the timer arm `liclrs oft the rollers 49 ofthe chain Vthe streams of oil will be projected inwardly to strike the joints '50, 5l ol the chain.

Having described my invention,

il claim:

'1. A. lu'brieating device tor moving chains having a series of transverse elements comprising a cylinder' having an opening directed toward the chain, ymeans for supplying oil to said cylinder, a plunger in said cylinder adapted to close raid opening, a timer arm connected to said plunger' and adapted to move into and out the pat-h of the transverse elements ot the chain, and lyieldable means normally holding said timer arm in the path ot said transverse elements.

2. fr lubricating device :tor moving chains having a series ot' transverse elements comprising a cylinder having an opening directed toward thelchain, means for supplying oil to said cylinder, a plunger in said cylinder adapted to close said opening, a timer arm consisting` of two sections pivoted together, the axis of the pivot being 4transverse to the movement of the chain, means for lining one oitlie sections to said plunger, the outer end ot the second section normally projecting in the path oi the transverse elements, means for yieldingly holding the timer arm in normal position, and means for holding said second section ot the timer arm against movement on its pivot in the direction ot the motion of the chain, whereby the timer arm will be moved longitudinally of itself by the transverse 4members of the chain, drawing with it the plunger, thereby permitting oil yto tlow into the cylinder, and the second section ot .the timer arm will lriclr out when it reaches the high points ot the transverse members, permitting the plunger 'to .snap 'back 'to normal position and project- 'the oil inthe cylinder through th-e openinon 3. A lubricating device for moving chains having a series of rollers mounted on transverse pins 'comprising .a pair lof cylinders mounted one on each side of the lpath of the rollers, a plunger in each cylinder, va common timer arm iixed at one of its ends to said plungers, the other end thereof Vnormally projecting into the path of said -rollers, yieldable means urging said timer arm toward normal position, means for supplying oil to said cylinders, and an opening |in each of said cylinders directed toward the path of the parts of said 'transverse pins on its respective side of the rollers.

e. A `lubricating device 'tor'rel-ative'ly' narrow moving chains having ylongitudinal links and transverse elements comprising a pair ofcylinders mounted one on each side of the lchain and extending substantially perpendicular'ly to the pla-ne ofthe chain, an opening in the end orn eachcylinder'directed inwardly toward the 'longitudinal linlrsof the chain nearest it, means for supplying oil to said cylinders, and means operable by the ltransverse elements of 'thel chain for Vintermittently projecting oil through said openings.

5. A lubricating device for moving chains having a series or' transverse elements comprising a cylinder having an opening Lin one end directed toward the Achai-n, a plunger in said cylinder having a reduced portion, means for introducing Aoil into said. cylinder at a point opposite the reduced portion of the plunger, the end oi said plunger being adapted to Close said open-ing when vin one extreme position, and means operable by the transverse elements of the chain for reciprocating the `plunger to intermittently Aproject oil onto the chain.

6. A lubricating device for ino-ving chains having a series of transverse elements comprising, a cylinder having an opening directed :toward the chain, means for supplying oil to said cylinder, a plunger in said cylinder, an arm pivoted to'swing 'in the direction of movement of the chain, said supporting means into a position such means supporting said pivot for reciprothat the free end of said arm lies in the eating movement substantially perpendicupath of said transverse elements, and a stop lar to the chain, the free end of said arm limiting pivotal movement of said arm t0- 5 being thereby moved into and out of the Ward the direction in Which Said chain is 15 path of said transverse elements, connecmoving. tions between said supporting means and The foregoing Ispecification signed at said plunger whereby said plunger is recip- Holden, W. Va., this 22 day of Feb., 1926. rocated by movement of said supporting 10 means, yieldable means normally urging WILLIAM A. HUNT. 

